SB2025100830 - Multiple vulnerabilities in 7-Zip

Description

This security bulletin contains information about 3 secuirty vulnerabilities.

1) Path traversal (CVE-ID: CVE-2025-11001)

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences within the handling of symbolic links in ZIP files. A remote attacker can send a specially crafted HTTP request and upload arbitrary files on the system, leading to arbitrary code execution.

2) Path traversal (CVE-ID: CVE-2025-11002)

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences within the handling of symbolic links in ZIP files. A remote attacker can send a specially crafted HTTP request and upload arbitrary files on the system, leading to arbitrary code execution.

3) NULL pointer dereference (CVE-ID: CVE-2025-53817)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error  in the Compound handler. A remote attacker can trick the victim into opening a specially crafted archive and crash the application. 

Remediation

Install update from vendor's website.

References

• https://www.zerodayinitiative.com/advisories/ZDI-25-949/
• https://www.zerodayinitiative.com/advisories/ZDI-25-950/
• https://securitylab.github.com/advisories/GHSL-2025-059_7-Zip/
• https://www.openwall.com/lists/oss-security/2025/07/18/2
• http://www.openwall.com/lists/oss-security/2025/07/18/2